This is a controller compatible with the Wii Classic Controller, equipped with a rapid-fire function. This is an officially licensed Nintendo product. It can be used for Virtual Console games, etc. Rapid-fire can be set for each button (A, B, X, Y, L, R). The rapid-fire speed can be adjusted to two levels: approximately 20 times per second and 10 times per second. There are no operational issues. *The D-pad input is slightly sensitive, but this is a design issue. If you have no questions, you can purchase it immediately.